LM4890MMX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Small size and low power consumption - High audio quality with minimal distortion - Wide voltage range for compatibility with various devices - Designed for portable electronic devices

Package: Miniature 8-pin SOIC package

Essence: The LM4890MMX/NOPB is a compact audio amplifier IC that provides high-quality sound amplification for portable electronic devices.

Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: 1.1W (typical) into 8Ω load at 5V supply
• Total Harmonic Distortion + Noise (THD+N): 0.1% (typical) at 1kHz, 1.1W output power
• Shutdown Current: 0.01μA (typical)
• Quiescent Current: 4mA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4890MMX/NOPB has the following pin configuration:

1. SHUTDOWN - Controls the device's shutdown mode
2. IN+ - Positive input for audio signal
3. IN- - Negative input for audio signal
4. GND - Ground reference
5. VDD - Positive power supply
6. BYPASS - Bypass capacitor connection
7. OUT- - Negative output for audio signal
8. OUT+ - Positive output for audio signal

Functional Features

• Low shutdown current for power-saving mode
• Thermal shutdown protection prevents overheating
• Short-circuit and thermal overload protection
• Internal gain setting resistors for easy configuration
• Pop and click suppression during power-up and shutdown

Advantages and Disadvantages

Advantages: - Compact size suitable for portable devices - High-quality audio amplification - Wide voltage range for compatibility - Built-in protection features

Disadvantages: - Limited output power compared to larger amplifiers - Requires external components for full functionality

Working Principles

The LM4890MMX/NOPB is a class AB audio amplifier that amplifies the input audio signal while maintaining low distortion. It operates by receiving an analog audio signal through the IN+ and IN- pins, which is then amplified and delivered to the OUT+ and OUT- pins. The gain of the amplifier can be adjusted using external resistors connected to the gain setting pins.

Detailed Application Field Plans

The LM4890MMX/NOPB is commonly used in various portable electronic devices, including: - Smartphones and tablets - Portable media players - Bluetooth speakers - Gaming consoles - Wearable devices

Detailed and Complete Alternative Models

1. LM4863MTE/NOPB - 2.2W Audio Power Amplifier
2. LM386N-4/NOPB - Low Voltage Audio Power Amplifier
3. TPA3116D2PWPR - Stereo Class-D Audio Amplifier

These alternative models offer similar functionality and are suitable replacements for the LM4890MMX/NOPB in different applications.

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